Dropping a year is okay so long as you are reasonably sure that you can make it next time. If not, then dropping a year is not worth it.
One Year is a LOT of time :
Considering the exam-pattern and the syllabus, I feel complete 1 year is a lot of time. Just think about this, full 365 days in your hand, and only about 10 subjects to study.
You must occupy yourself with something else too. If you have a job, then best. But if you don't, then you can do lots of other things, like, online courses on "coursera" websites OR some contribution to open-source projects.